n. pl. vo·cab·u·lar·ies 1. All the words of a language. 2. The sum of words used by, understood by, or at the command of a particular person or group. 3. A list of words and often phrases, usually arranged alphabetically and defined or translated; a lexicon or glossary. 4. A supply of expressive means; a repertoire of communication: a dancer's vocabulary of movement. [French vocabulaire, from Old French, from Medieval Latin vocābulārium, from neuter of vocābulārius, of words, from Latin vocābulum, name; see VOCABLE.] |
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